"With the Epsom salts and magnesium that are in those tanks, they're helpful with recovery and relaxing your muscles and things like that," he says. "And also, the sensory-deprivation aspect of it. It's one of the only places where you can really get unplugged from all the noise and distractions that go on with daily life."

In an earlier interview, he said floating — with its room for thought and lack of stimulation — leaves him with lots of clarity.

"It's refreshing to process what I thought about over an hour of floating, which are probably the most important things that are going on right now in your life," he says. "I have a very clear head when it's done, and it shows in the days after floating. It gives me a nice boost of focus and perspective. The more I do it, the more I get from it."